Ices are omnipresent in cold regions in space on, e.g., comets, dust grains, transneptunian objects, surfaces of planets and their satellites. The dominant molecule in such ices is water, but also other small molecules or even complex organic molecules (COMs) may be present. Ionizing radiation (UV photons, electrons, ions from cosmic rays or solar wind) induces several physico-chemical processes such as radiolysis. The fragmentation of initial molecules followed by chemical reactions between radicals may lead to formation of new molecules. Furthermore, also implanted projectiles can contribute to chemistry by forming new molecular species. Other observed effects include structural changes (compaction, amorphization) and desorption (sputtering) of particles from the surface. At CIMAP (Caen, France), using the different beam lines of the GANIL facility, and at GSI (Darmstadt, Germany), the interaction of swift highly charged heavy ions with astrophysical ices has been studied in a wide projectile energy range from keV to GeV. Here, two examples of our studies on astrophysical and astrochemical applications will be discussed in detail: 1) the synthesis of COMs under irradiation of ices made of small molecules, and 2) radiosensitivity of COMs such as pyridine, glycine and adenine, both for isolated molecules in the gas phase and in condensed phase. Special emphasis is given on pyridine and pyridine in water matrix.
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June 2019
Review Article|
June 01 2019
Ion radiation in icy space environments: Synthesis and radioresistance of complex organic molecules
Prudence C. J. Ada Bibang;
Prudence C. J. Ada Bibang
1
Centre de Recherche sur les Ions, les Matériaux et la Photonique, Normandie Univ, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP
, 14000 Caen, France
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Aditya N. Agnihotri;
Aditya N. Agnihotri
a)
1
Centre de Recherche sur les Ions, les Matériaux et la Photonique, Normandie Univ, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP
, 14000 Caen, France
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Basile Augé;
Basile Augé
1
Centre de Recherche sur les Ions, les Matériaux et la Photonique, Normandie Univ, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP
, 14000 Caen, France
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Philippe Boduch;
Philippe Boduch
1
Centre de Recherche sur les Ions, les Matériaux et la Photonique, Normandie Univ, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP
, 14000 Caen, France
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Charles Desfrançois;
Charles Desfrançois
2
Laboratoire de Physique des Lasers (LPL-UMR CNRS 7538), Université Paris 13 Villetaneuse
, France
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Alicja Domaracka;
Alicja Domaracka
1
Centre de Recherche sur les Ions, les Matériaux et la Photonique, Normandie Univ, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP
, 14000 Caen, France
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Frédéric Lecomte;
Frédéric Lecomte
2
Laboratoire de Physique des Lasers (LPL-UMR CNRS 7538), Université Paris 13 Villetaneuse
, France
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Bruno Manil;
Bruno Manil
2
Laboratoire de Physique des Lasers (LPL-UMR CNRS 7538), Université Paris 13 Villetaneuse
, France
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Rafael Martinez;
Rafael Martinez
3
Departamento de Física, Universidade Federal do Amapá
, Macapa, Brazil
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Gabriel S. V. Muniz;
Gabriel S. V. Muniz
b)
1
Centre de Recherche sur les Ions, les Matériaux et la Photonique, Normandie Univ, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP
, 14000 Caen, France
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Nicolas Nieuwjaer;
Nicolas Nieuwjaer
2
Laboratoire de Physique des Lasers (LPL-UMR CNRS 7538), Université Paris 13 Villetaneuse
, France
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Hermann Rothard
Hermann Rothard
a)
1
Centre de Recherche sur les Ions, les Matériaux et la Photonique, Normandie Univ, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP
, 14000 Caen, France
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a)
Now at: Indian Institute of Technology Delhi, India.
b)
Now at: Institute of Physics, University of São Paulo, Brazil.
c)
E-mail: [email protected]
Fiz. Nizk. Temp. 45, 692–700 (June 2019)
Translated by AIP Author Services
Low Temp. Phys. 45, 590–597 (2019)
Citation
Prudence C. J. Ada Bibang, Aditya N. Agnihotri, Basile Augé, Philippe Boduch, Charles Desfrançois, Alicja Domaracka, Frédéric Lecomte, Bruno Manil, Rafael Martinez, Gabriel S. V. Muniz, Nicolas Nieuwjaer, Hermann Rothard; Ion radiation in icy space environments: Synthesis and radioresistance of complex organic molecules. Low Temp. Phys. 1 June 2019; 45 (6): 590–597. https://doi.org/10.1063/1.5103250
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